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He is a caveman who is thousands of years old (his exact age is never disclosed). He can pull various objects from his body hair. He can also fly, but his flying power always seems to conk out on him at the worst possible moment. Sometimes he would attribute this mishap to an energy shortage ("Uh oh! Bad time for energy crisis." CRASH!), which was a pun on the gasoline rationing shortages of the late 1970s. He speaks in stereotypical "caveman-talk", replacing subjective pronouns with their objective equivalents and dropping articles such as "the" (for example, "Me know where bad guys are hiding."), and often mumbles the nonsense phrase "unga bunga". He also has a bad habit of occasionally eating large non-food objects in one gulp (i.e. bicycles, TV sets, safes, table lamps), and the Teen Angels occasionally have to stop him from eating potential clues that will help them to solve the mystery.

Captain Caveman's powers include super-strength, a variety of useful objects hidden inside his fur, and a club that allows him to fly and from which pops out different tools he uses to fight crime. His trademark is his battle cry of "Captain CAAAAAVEMAAAAAAANNNN!!!!".

In November 1980, Captain Caveman began to star in segments of his own on The Flintstone Comedy Show, one of many spin-offs of Hanna-Barbera's popular prime-time show The Flintstones, often in a role similar to that of Superman. Captain Caveman worked at The Daily Granite newspaper with Wilma and Betty His "secret identity" was Chester, the office boy. To disguise himself as Chester, Captain Caveman wore a pair of glasses and a tie. Despite the simplicity of his disguise, he required a coat rack and an elaborate transformation sequence to become Captain Caveman.

In 1986, Captain Caveman appeared in a backup segment of The Flintstone Kids called Captain Caveman and Son with his son, Cavey Jr. (voiced by Charles Adler). In this case he appeared on a show-within-a-show that the younger versions of Fred, Barney, Wilma, and Betty enjoyed watching; the Captain's mumbled "unga bunga" became a catchphrase that the kids would shout before watching each "episode" of the show. The show would involve a lesson the Flintstone kids were trying to learn in the prologue. The whole "secret identity" idea was also ignored or forgotten.

Captain Caveman appeared in the Robot Chicken episode "Ban on the Fun" voiced by Breckin Meyer. In a segment that parodies the Laff-A-Lympics in the style of the Munich massacre, Captain Caveman and Shaggy Rogers confront Daisy Mayhem and Captain Caveman blows her up with the wrong club.

Captain Caveman appeared as an enemy in the 8-bit computer game Renegade III: The Final Chapter.

In the Hallowee] 2008 episode of Homestar Runner, Homsar disguises himself as Captain Caveman. He then exclaims "Daaa!! AaAah'm the Captain Caveman of the graveyard train!"

In the Family Guy episode named "Perfect Castaway", Peter expresses how much he misses Captain Caveman, and vows that he will see him again once he gets off the island.

In the "Pinky and the Brain" episode "The Luck of Pinky" Captain Caveman makes a cameo appearance as a small statue.

Captain Caveman also makes a cameo appearance in a episode of Adventure Time with Finn and Jake where he is seen as a stuffed doll in Finn's room.

Captain Caveman (voiced by Jim Cummings) and his team appears in the Scooby-Doo! Mystery Incorporated episode Mystery Solvers Club State Finals alongside other Hanna-Barbera detective teams in a fever dream of Scooby's. When the teenage sleuths are kidnapped, it's up to their sidekicks to save them.